<template>
<div style="width: 500px">
  <el-input
      placeholder="请输入部门名称进行搜索..."
      prefix-icon="el-icon-search"
      v-model="filterText">
  </el-input>

  <el-tree

      :data="deps"
      :props="defaultProps"
      :expand-on-click-node="false"
      :filter-node-method="filterNode"
      ref="tree">
    <span class="custom-tree-node" slot-scope="{ node, data }" style="display: flex;
justify-content: space-between;width: 100%">
        <span>{{ data.name }}</span>
        <span>
          <el-button
              type="primary"
              size="mini"
              class="depBtn"
              @click="() => showAddDep(data)">
            添加部门
          </el-button>
          <el-button
              type="danger"
              size="mini"
              class="depBtn"
              @click="() => deleteDep( data)">
            删除部门
          </el-button>
        </span>
      </span>
  </el-tree>
  <el-dialog
      title="添加部门"
      :visible.sync="dialogVisible"
      width="30%">

    <div>
      <table>
        <tr>
          <td>
            <el-tag>上级部门</el-tag>
          </td>
          <td>{{pname}}</td>
        </tr>
        <tr>
          <td>
            <el-tag>部门名称</el-tag>
          </td>
          <td>
            <el-input v-model="dep.name" aria-placeholder="请输入部门名称..."></el-input>
          </td>
        </tr>


      </table>
    </div>
    <span slot="footer" class="dialog-footer">
    <el-button @click="dialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="daAddDep">确 定</el-button>
  </span>
  </el-dialog>
</div>
</template>

<script>
export default {
  name: "DepMana",
  data(){
    return{
      filterText: '',
      deps:[],
      defaultProps: {
        children: 'children',
        label: 'name'
      },
      dialogVisible:false,
      dep:{
        name:'',
        parentId: -1
      },
      pname:''
    }
  },
  watch: {
    filterText(val) {
      this.$refs.tree.filter(val);
    }
  },
  mounted() {
    this.initDeps();
  },
  methods:{
    initDep(){
      this.dep={
        name:'',
        parentId: -1
      }
      this.pname='';
    },
    addDep2Deps(deps,dep){
      for (let i=0;i<deps.length;i++){
        let d= deps[i];
        if (d.id == dep.parentId){
          d.children=d.children.concat(dep);
          if (d.children.length > 0){
            d.isParent = true;
          }
          return;
        }else {
          this.addDep2Deps(d.children,dep);
        }
      }
    },
    daAddDep(){
      this.postRequest('/system/basic/department/',this.dep).then(resp=>{
        if (resp){
          this.addDep2Deps(this.deps,resp.obj);
          this.dialogVisible=false;
          this.initDep();
        }
      })
    },
    showAddDep(data){
      this.dep.parentId = data.id;
      this.pname=data.name;
     this.dialogVisible=true;
    },
    removeDepFroms(p,deps,id){
      for (let i = 0; i < deps.length; i++) {
        let d = deps[i];
        if (d.id==id){
           deps.splice(i,1);
           if (deps.length==0){
             p.isParent = false;
           }
           return;
        }else {
          this.removeDepFroms(d,d.children,id);
        }
      }
    },
    deleteDep(data){
      if (data.isParent){
        this.$message.error('父部门删除失败!')
      }else {
        this.$confirm('此操作将永久删除该['+data.name+']部门, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          this.deleteRequest('/system/basic/department/'+data.id).then(resp=>{
            if (resp){
              this.removeDepFroms(null,this.deps,data.id);

            }
          })
        }).catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          });
        });
      }
    },
    initDeps(){
      this.getRequest('/system/basic/department/').then(resp=>{
        if (resp){
          this.deps=resp;
        }
      })
    },
    filterNode(value, data) {
      if (!value) return true;
      return data.name.indexOf(value) !== -1;
    }
  }
}
</script>

<style>
 .depBtn{
   padding: 2px;
 }

</style>